Racer X Films: 2010 Kawasaki KX450F August 8, 2009 6:10pm | by: Steve Cox Home Supercross Motocross Multimedia Racing Video Racer X Films: 2010 Kawasaki KX450F Racer X Films was out at Pala Raceway on Wednesday for a first look at the 2010 Kawasaki KX450F.